Tài nguyên được gắn thẻ với: Water Wh
1 đề mục được tìm thấy (Hiển thị 1 - 1)
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		01-01-1984 Once it is understood that gravity and water can be harnessed to produce energy, a study of methods to extract this energy efficiently can be undertaken. The purpose of this paper is to discuss several such methods in general terms. The paper provides a basic introduction to the science of water...
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